Hi,
I'm curious convention on how to design modules which has dependencies. For
example if I've got an auth module with a function called authenticate
which in turn uses a UserRepository object (which in turn uses a database
library object like node-mysql) which communicates with the database, how
should I design the auth module? I'm really interested in ways which makes
the code easier to unit test.
Is this a good way? (Pseudo code):
Index.js:
var db = new MysqlClient(...)
var users = new UserRepository(db)
var auth = require('./lib/auth')(users)
auth.authenticate(...)
Auth.js:
module.exports = function(users) {
return {
authenticat: function(email, password, callback) {
user = users.get({ email: email}, function(user) {
if (user) callback(null, user)
else callback(new Error('Authentication failed'))
}
},
register: function(...) {}, etc...
}
}
Is there a better, cleaner way of doing it?
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